Britney Spears' little sister Jamie Lynn will become Mrs. Watson by the end of the week (17Mar14), according to reports.

The 22 year old and her fiance Jamie Watson have obtained their marriage licence in Louisiana, and insiders claim they are planning to exchange vows on Friday.

Indeed, the couple has listed 14 March (14) as the date of the nuptials on its gift registry page with home furnishings store Bed, Bath & Beyond.

On Thursday (13Mar14), older sister Britney and her boyfriend David Lucado were even spotted arriving at Los Angeles Airport to catch a flight to her homestate of Louisiana.

The couple became engaged a year ago (Mar13).

This will be Jamie Lynn Spears' first marriage; she was previously engaged to Casey Aldridge, the father of her five-year-old daughter, Maddie.